A wire of 3 mm radius is made up of an inner material (0 2 mm) for which 10 7 S m, and an outer material (2 mm 3 mm) for which 410 7 S m If the wire carries a total current of 100 mA dc, determine H everywhere as a function of ...

Since the materials have different conductivities the current densities within them will differ Ele ...

A wire of 3 mm radius is made up of an inner material (0 < <

Question:

A wire of 3 mm radius is made up of an inner material (0 < ρ < 2 mm) for which σ = 10⁷ S/m, and an outer material (2 mm < ρ < 3 mm) for which σ = 4×10⁷ S/m. If the wire carries a total current of 100 mA dc, determine H everywhere as a function of ρ.

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